Has anyone ever experienced a loss of HP do to aftermarket rockers? I know some had some valve float issues due to the YTs and running the spring on the edge, but Im looking for people that lost HP from the rockers alone..

 

stock ratio or higher?

 

Both.

 

Someone did I don't recall who. I think they had YT's and the springs weren't up the extra weight the YT's put over the valve.

 

Not sure about that, I took my Yella Terra's off and put the stock rockers on to see how they did, just as loud and the car felt a little slower SOTP. I'm thinking it's just in my head because you shouldn't feel any difference SOTP from rockers. But you never know.

-Sly

 

The YTs have caused some problems. Its when you have a cam thats already pushing the limitsof the spring and then you throw a rocker on that has more weight on the valve than stock. The spring now has to work harder to keep up with the extra weight.